The US Department of Defense has released a memo stating that open source should be considered alongside commercial software when assessing department needs. The memo also debunks some myths regarding open source software. From the article:

 "Open source can be compared directly with commercial software and it offers unique advantages for rapid prototyping and sharing across the military. Those are the key takeaways in a new memorandum now circulating the Pentagon from deputy CIO David Wennergren (right). While it’s not a complete endorsement of open source, it does give people a green light to go get some."

I say that's a pretty mighty +1 for FOSS.